Question

Steel castings require considerable more cleaning than those of iron and brass.

(a) True

(b) False

This question was addressed to me in a national level competition.

The origin of the question is Fettling and Cleaning of Castings topic in section Concept of Gating and Risering of Foundry and Forging

Answer 1

The correct answer is (a) True

Best explanation: Steel castings, because of their high melting and pouring temperatures and consequent burning of the sand in contact with the molten metal, the possibility of forming of the scales is high. Hence they require more cleaning.